1 /*
2  * Copyright (c) 2016, Mellanox Technologies. All rights reserved.
3  *
4  * This software is available to you under a choice of one of two
5  * licenses.  You may choose to be licensed under the terms of the GNU
6  * General Public License (GPL) Version 2, available from the file
7  * COPYING in the main directory of this source tree, or the
8  * OpenIB.org BSD license below:
9  *
10  *     Redistribution and use in source and binary forms, with or
11  *     without modification, are permitted provided that the following
12  *     conditions are met:
13  *
14  *      - Redistributions of source code must retain the above
15  *        copyright notice, this list of conditions and the following
16  *        disclaimer.
17  *
18  *      - Redistributions in binary form must reproduce the above
19  *        copyright notice, this list of conditions and the following
20  *        disclaimer in the documentation and/or other materials
21  *        provided with the distribution.
22  *
23  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
24  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
25  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
26  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
27  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
28  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
29  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
30  * SOFTWARE.
31  */
32 
33 #include <linux/mlx5/fs.h>
34 #include <net/switchdev.h>
35 #include <net/pkt_cls.h>
36 #include <net/act_api.h>
37 #include <net/devlink.h>
38 #include <net/ipv6_stubs.h>
39 
40 #include "eswitch.h"
41 #include "en.h"
42 #include "en_rep.h"
43 #include "en/params.h"
44 #include "en/txrx.h"
45 #include "en_tc.h"
46 #include "en/rep/tc.h"
47 #include "en/rep/neigh.h"
48 #include "en/rep/bridge.h"
49 #include "en/devlink.h"
50 #include "fs_core.h"
51 #include "lib/mlx5.h"
52 #include "lib/devcom.h"
53 #define CREATE_TRACE_POINTS
54 #include "diag/en_rep_tracepoint.h"
55 #include "en_accel/ipsec.h"
56 
57 #define MLX5E_REP_PARAMS_DEF_LOG_SQ_SIZE \
58 	max(0x7, MLX5E_PARAMS_MINIMUM_LOG_SQ_SIZE)
59 #define MLX5E_REP_PARAMS_DEF_NUM_CHANNELS 1
60 
61 static const char mlx5e_rep_driver_name[] = "mlx5e_rep";
62 
mlx5e_rep_get_drvinfo(struct net_device * dev,struct ethtool_drvinfo * drvinfo)63 static void mlx5e_rep_get_drvinfo(struct net_device *dev,
64 				  struct ethtool_drvinfo *drvinfo)
65 {
66 	struct mlx5e_priv *priv = netdev_priv(dev);
67 	struct mlx5_core_dev *mdev = priv->mdev;
68 
69 	strlcpy(drvinfo->driver, mlx5e_rep_driver_name,
70 		sizeof(drvinfo->driver));
71 	snprintf(drvinfo->fw_version, sizeof(drvinfo->fw_version),
72 		 "%d.%d.%04d (%.16s)",
73 		 fw_rev_maj(mdev), fw_rev_min(mdev),
74 		 fw_rev_sub(mdev), mdev->board_id);
75 }
76 
77 static const struct counter_desc sw_rep_stats_desc[] = {
78 	{ MLX5E_DECLARE_STAT(struct mlx5e_sw_stats, rx_packets) },
79 	{ MLX5E_DECLARE_STAT(struct mlx5e_sw_stats, rx_bytes) },
80 	{ MLX5E_DECLARE_STAT(struct mlx5e_sw_stats, tx_packets) },
81 	{ MLX5E_DECLARE_STAT(struct mlx5e_sw_stats, tx_bytes) },
82 };
83 
84 struct vport_stats {
85 	u64 vport_rx_packets;
86 	u64 vport_tx_packets;
87 	u64 vport_rx_bytes;
88 	u64 vport_tx_bytes;
89 };
90 
91 static const struct counter_desc vport_rep_stats_desc[] = {
92 	{ MLX5E_DECLARE_STAT(struct vport_stats, vport_rx_packets) },
93 	{ MLX5E_DECLARE_STAT(struct vport_stats, vport_rx_bytes) },
94 	{ MLX5E_DECLARE_STAT(struct vport_stats, vport_tx_packets) },
95 	{ MLX5E_DECLARE_STAT(struct vport_stats, vport_tx_bytes) },
96 };
97 
98 #define NUM_VPORT_REP_SW_COUNTERS ARRAY_SIZE(sw_rep_stats_desc)
99 #define NUM_VPORT_REP_HW_COUNTERS ARRAY_SIZE(vport_rep_stats_desc)
100 
MLX5E_DECLARE_STATS_GRP_OP_NUM_STATS(sw_rep)101 static MLX5E_DECLARE_STATS_GRP_OP_NUM_STATS(sw_rep)
102 {
103 	return NUM_VPORT_REP_SW_COUNTERS;
104 }
105 
MLX5E_DECLARE_STATS_GRP_OP_FILL_STRS(sw_rep)106 static MLX5E_DECLARE_STATS_GRP_OP_FILL_STRS(sw_rep)
107 {
108 	int i;
109 
110 	for (i = 0; i < NUM_VPORT_REP_SW_COUNTERS; i++)
111 		strcpy(data + (idx++) * ETH_GSTRING_LEN,
112 		       sw_rep_stats_desc[i].format);
113 	return idx;
114 }
115 
MLX5E_DECLARE_STATS_GRP_OP_FILL_STATS(sw_rep)116 static MLX5E_DECLARE_STATS_GRP_OP_FILL_STATS(sw_rep)
117 {
118 	int i;
119 
120 	for (i = 0; i < NUM_VPORT_REP_SW_COUNTERS; i++)
121 		data[idx++] = MLX5E_READ_CTR64_CPU(&priv->stats.sw,
122 						   sw_rep_stats_desc, i);
123 	return idx;
124 }
125 
MLX5E_DECLARE_STATS_GRP_OP_UPDATE_STATS(sw_rep)126 static MLX5E_DECLARE_STATS_GRP_OP_UPDATE_STATS(sw_rep)
127 {
128 	struct mlx5e_sw_stats *s = &priv->stats.sw;
129 	struct rtnl_link_stats64 stats64 = {};
130 
131 	memset(s, 0, sizeof(*s));
132 	mlx5e_fold_sw_stats64(priv, &stats64);
133 
134 	s->rx_packets = stats64.rx_packets;
135 	s->rx_bytes   = stats64.rx_bytes;
136 	s->tx_packets = stats64.tx_packets;
137 	s->tx_bytes   = stats64.tx_bytes;
138 	s->tx_queue_dropped = stats64.tx_dropped;
139 }
140 
MLX5E_DECLARE_STATS_GRP_OP_NUM_STATS(vport_rep)141 static MLX5E_DECLARE_STATS_GRP_OP_NUM_STATS(vport_rep)
142 {
143 	return NUM_VPORT_REP_HW_COUNTERS;
144 }
145 
MLX5E_DECLARE_STATS_GRP_OP_FILL_STRS(vport_rep)146 static MLX5E_DECLARE_STATS_GRP_OP_FILL_STRS(vport_rep)
147 {
148 	int i;
149 
150 	for (i = 0; i < NUM_VPORT_REP_HW_COUNTERS; i++)
151 		strcpy(data + (idx++) * ETH_GSTRING_LEN, vport_rep_stats_desc[i].format);
152 	return idx;
153 }
154 
MLX5E_DECLARE_STATS_GRP_OP_FILL_STATS(vport_rep)155 static MLX5E_DECLARE_STATS_GRP_OP_FILL_STATS(vport_rep)
156 {
157 	int i;
158 
159 	for (i = 0; i < NUM_VPORT_REP_HW_COUNTERS; i++)
160 		data[idx++] = MLX5E_READ_CTR64_CPU(&priv->stats.vf_vport,
161 						   vport_rep_stats_desc, i);
162 	return idx;
163 }
164 
MLX5E_DECLARE_STATS_GRP_OP_UPDATE_STATS(vport_rep)165 static MLX5E_DECLARE_STATS_GRP_OP_UPDATE_STATS(vport_rep)
166 {
167 	struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
168 	struct mlx5e_rep_priv *rpriv = priv->ppriv;
169 	struct mlx5_eswitch_rep *rep = rpriv->rep;
170 	struct rtnl_link_stats64 *vport_stats;
171 	struct ifla_vf_stats vf_stats;
172 	int err;
173 
174 	err = mlx5_eswitch_get_vport_stats(esw, rep->vport, &vf_stats);
175 	if (err) {
176 		netdev_warn(priv->netdev, "vport %d error %d reading stats\n",
177 			    rep->vport, err);
178 		return;
179 	}
180 
181 	vport_stats = &priv->stats.vf_vport;
182 	/* flip tx/rx as we are reporting the counters for the switch vport */
183 	vport_stats->rx_packets = vf_stats.tx_packets;
184 	vport_stats->rx_bytes   = vf_stats.tx_bytes;
185 	vport_stats->tx_packets = vf_stats.rx_packets;
186 	vport_stats->tx_bytes   = vf_stats.rx_bytes;
187 }
188 
mlx5e_rep_get_strings(struct net_device * dev,u32 stringset,uint8_t * data)189 static void mlx5e_rep_get_strings(struct net_device *dev,
190 				  u32 stringset, uint8_t *data)
191 {
192 	struct mlx5e_priv *priv = netdev_priv(dev);
193 
194 	switch (stringset) {
195 	case ETH_SS_STATS:
196 		mlx5e_stats_fill_strings(priv, data);
197 		break;
198 	}
199 }
200 
mlx5e_rep_get_ethtool_stats(struct net_device * dev,struct ethtool_stats * stats,u64 * data)201 static void mlx5e_rep_get_ethtool_stats(struct net_device *dev,
202 					struct ethtool_stats *stats, u64 *data)
203 {
204 	struct mlx5e_priv *priv = netdev_priv(dev);
205 
206 	mlx5e_ethtool_get_ethtool_stats(priv, stats, data);
207 }
208 
mlx5e_rep_get_sset_count(struct net_device * dev,int sset)209 static int mlx5e_rep_get_sset_count(struct net_device *dev, int sset)
210 {
211 	struct mlx5e_priv *priv = netdev_priv(dev);
212 
213 	switch (sset) {
214 	case ETH_SS_STATS:
215 		return mlx5e_stats_total_num(priv);
216 	default:
217 		return -EOPNOTSUPP;
218 	}
219 }
220 
mlx5e_rep_get_ringparam(struct net_device * dev,struct ethtool_ringparam * param)221 static void mlx5e_rep_get_ringparam(struct net_device *dev,
222 				struct ethtool_ringparam *param)
223 {
224 	struct mlx5e_priv *priv = netdev_priv(dev);
225 
226 	mlx5e_ethtool_get_ringparam(priv, param);
227 }
228 
mlx5e_rep_set_ringparam(struct net_device * dev,struct ethtool_ringparam * param)229 static int mlx5e_rep_set_ringparam(struct net_device *dev,
230 			       struct ethtool_ringparam *param)
231 {
232 	struct mlx5e_priv *priv = netdev_priv(dev);
233 
234 	return mlx5e_ethtool_set_ringparam(priv, param);
235 }
236 
mlx5e_rep_get_channels(struct net_device * dev,struct ethtool_channels * ch)237 static void mlx5e_rep_get_channels(struct net_device *dev,
238 				   struct ethtool_channels *ch)
239 {
240 	struct mlx5e_priv *priv = netdev_priv(dev);
241 
242 	mlx5e_ethtool_get_channels(priv, ch);
243 }
244 
mlx5e_rep_set_channels(struct net_device * dev,struct ethtool_channels * ch)245 static int mlx5e_rep_set_channels(struct net_device *dev,
246 				  struct ethtool_channels *ch)
247 {
248 	struct mlx5e_priv *priv = netdev_priv(dev);
249 
250 	return mlx5e_ethtool_set_channels(priv, ch);
251 }
252 
mlx5e_rep_get_coalesce(struct net_device * netdev,struct ethtool_coalesce * coal,struct kernel_ethtool_coalesce * kernel_coal,struct netlink_ext_ack * extack)253 static int mlx5e_rep_get_coalesce(struct net_device *netdev,
254 				  struct ethtool_coalesce *coal,
255 				  struct kernel_ethtool_coalesce *kernel_coal,
256 				  struct netlink_ext_ack *extack)
257 {
258 	struct mlx5e_priv *priv = netdev_priv(netdev);
259 
260 	return mlx5e_ethtool_get_coalesce(priv, coal);
261 }
262 
mlx5e_rep_set_coalesce(struct net_device * netdev,struct ethtool_coalesce * coal,struct kernel_ethtool_coalesce * kernel_coal,struct netlink_ext_ack * extack)263 static int mlx5e_rep_set_coalesce(struct net_device *netdev,
264 				  struct ethtool_coalesce *coal,
265 				  struct kernel_ethtool_coalesce *kernel_coal,
266 				  struct netlink_ext_ack *extack)
267 {
268 	struct mlx5e_priv *priv = netdev_priv(netdev);
269 
270 	return mlx5e_ethtool_set_coalesce(priv, coal);
271 }
272 
mlx5e_rep_get_rxfh_key_size(struct net_device * netdev)273 static u32 mlx5e_rep_get_rxfh_key_size(struct net_device *netdev)
274 {
275 	struct mlx5e_priv *priv = netdev_priv(netdev);
276 
277 	return mlx5e_ethtool_get_rxfh_key_size(priv);
278 }
279 
mlx5e_rep_get_rxfh_indir_size(struct net_device * netdev)280 static u32 mlx5e_rep_get_rxfh_indir_size(struct net_device *netdev)
281 {
282 	struct mlx5e_priv *priv = netdev_priv(netdev);
283 
284 	return mlx5e_ethtool_get_rxfh_indir_size(priv);
285 }
286 
287 static const struct ethtool_ops mlx5e_rep_ethtool_ops = {
288 	.supported_coalesce_params = ETHTOOL_COALESCE_USECS |
289 				     ETHTOOL_COALESCE_MAX_FRAMES |
290 				     ETHTOOL_COALESCE_USE_ADAPTIVE,
291 	.get_drvinfo	   = mlx5e_rep_get_drvinfo,
292 	.get_link	   = ethtool_op_get_link,
293 	.get_strings       = mlx5e_rep_get_strings,
294 	.get_sset_count    = mlx5e_rep_get_sset_count,
295 	.get_ethtool_stats = mlx5e_rep_get_ethtool_stats,
296 	.get_ringparam     = mlx5e_rep_get_ringparam,
297 	.set_ringparam     = mlx5e_rep_set_ringparam,
298 	.get_channels      = mlx5e_rep_get_channels,
299 	.set_channels      = mlx5e_rep_set_channels,
300 	.get_coalesce      = mlx5e_rep_get_coalesce,
301 	.set_coalesce      = mlx5e_rep_set_coalesce,
302 	.get_rxfh_key_size   = mlx5e_rep_get_rxfh_key_size,
303 	.get_rxfh_indir_size = mlx5e_rep_get_rxfh_indir_size,
304 };
305 
mlx5e_sqs2vport_stop(struct mlx5_eswitch * esw,struct mlx5_eswitch_rep * rep)306 static void mlx5e_sqs2vport_stop(struct mlx5_eswitch *esw,
307 				 struct mlx5_eswitch_rep *rep)
308 {
309 	struct mlx5e_rep_sq *rep_sq, *tmp;
310 	struct mlx5e_rep_priv *rpriv;
311 
312 	if (esw->mode != MLX5_ESWITCH_OFFLOADS)
313 		return;
314 
315 	rpriv = mlx5e_rep_to_rep_priv(rep);
316 	list_for_each_entry_safe(rep_sq, tmp, &rpriv->vport_sqs_list, list) {
317 		mlx5_eswitch_del_send_to_vport_rule(rep_sq->send_to_vport_rule);
318 		if (rep_sq->send_to_vport_rule_peer)
319 			mlx5_eswitch_del_send_to_vport_rule(rep_sq->send_to_vport_rule_peer);
320 		list_del(&rep_sq->list);
321 		kfree(rep_sq);
322 	}
323 }
324 
mlx5e_sqs2vport_start(struct mlx5_eswitch * esw,struct mlx5_eswitch_rep * rep,u32 * sqns_array,int sqns_num)325 static int mlx5e_sqs2vport_start(struct mlx5_eswitch *esw,
326 				 struct mlx5_eswitch_rep *rep,
327 				 u32 *sqns_array, int sqns_num)
328 {
329 	struct mlx5_eswitch *peer_esw = NULL;
330 	struct mlx5_flow_handle *flow_rule;
331 	struct mlx5e_rep_priv *rpriv;
332 	struct mlx5e_rep_sq *rep_sq;
333 	int err;
334 	int i;
335 
336 	if (esw->mode != MLX5_ESWITCH_OFFLOADS)
337 		return 0;
338 
339 	rpriv = mlx5e_rep_to_rep_priv(rep);
340 	if (mlx5_devcom_is_paired(esw->dev->priv.devcom, MLX5_DEVCOM_ESW_OFFLOADS))
341 		peer_esw = mlx5_devcom_get_peer_data(esw->dev->priv.devcom,
342 						     MLX5_DEVCOM_ESW_OFFLOADS);
343 
344 	for (i = 0; i < sqns_num; i++) {
345 		rep_sq = kzalloc(sizeof(*rep_sq), GFP_KERNEL);
346 		if (!rep_sq) {
347 			err = -ENOMEM;
348 			goto out_err;
349 		}
350 
351 		/* Add re-inject rule to the PF/representor sqs */
352 		flow_rule = mlx5_eswitch_add_send_to_vport_rule(esw, esw, rep,
353 								sqns_array[i]);
354 		if (IS_ERR(flow_rule)) {
355 			err = PTR_ERR(flow_rule);
356 			kfree(rep_sq);
357 			goto out_err;
358 		}
359 		rep_sq->send_to_vport_rule = flow_rule;
360 		rep_sq->sqn = sqns_array[i];
361 
362 		if (peer_esw) {
363 			flow_rule = mlx5_eswitch_add_send_to_vport_rule(peer_esw, esw,
364 									rep, sqns_array[i]);
365 			if (IS_ERR(flow_rule)) {
366 				err = PTR_ERR(flow_rule);
367 				mlx5_eswitch_del_send_to_vport_rule(rep_sq->send_to_vport_rule);
368 				kfree(rep_sq);
369 				goto out_err;
370 			}
371 			rep_sq->send_to_vport_rule_peer = flow_rule;
372 		}
373 
374 		list_add(&rep_sq->list, &rpriv->vport_sqs_list);
375 	}
376 
377 	if (peer_esw)
378 		mlx5_devcom_release_peer_data(esw->dev->priv.devcom, MLX5_DEVCOM_ESW_OFFLOADS);
379 
380 	return 0;
381 
382 out_err:
383 	mlx5e_sqs2vport_stop(esw, rep);
384 
385 	if (peer_esw)
386 		mlx5_devcom_release_peer_data(esw->dev->priv.devcom, MLX5_DEVCOM_ESW_OFFLOADS);
387 
388 	return err;
389 }
390 
mlx5e_add_sqs_fwd_rules(struct mlx5e_priv * priv)391 int mlx5e_add_sqs_fwd_rules(struct mlx5e_priv *priv)
392 {
393 	struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
394 	struct mlx5e_rep_priv *rpriv = priv->ppriv;
395 	struct mlx5_eswitch_rep *rep = rpriv->rep;
396 	struct mlx5e_channel *c;
397 	int n, tc, num_sqs = 0;
398 	int err = -ENOMEM;
399 	u32 *sqs;
400 
401 	sqs = kcalloc(priv->channels.num * mlx5e_get_dcb_num_tc(&priv->channels.params),
402 		      sizeof(*sqs), GFP_KERNEL);
403 	if (!sqs)
404 		goto out;
405 
406 	for (n = 0; n < priv->channels.num; n++) {
407 		c = priv->channels.c[n];
408 		for (tc = 0; tc < c->num_tc; tc++)
409 			sqs[num_sqs++] = c->sq[tc].sqn;
410 	}
411 
412 	err = mlx5e_sqs2vport_start(esw, rep, sqs, num_sqs);
413 	kfree(sqs);
414 
415 out:
416 	if (err)
417 		netdev_warn(priv->netdev, "Failed to add SQs FWD rules %d\n", err);
418 	return err;
419 }
420 
mlx5e_remove_sqs_fwd_rules(struct mlx5e_priv * priv)421 void mlx5e_remove_sqs_fwd_rules(struct mlx5e_priv *priv)
422 {
423 	struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
424 	struct mlx5e_rep_priv *rpriv = priv->ppriv;
425 	struct mlx5_eswitch_rep *rep = rpriv->rep;
426 
427 	mlx5e_sqs2vport_stop(esw, rep);
428 }
429 
mlx5e_rep_open(struct net_device * dev)430 static int mlx5e_rep_open(struct net_device *dev)
431 {
432 	struct mlx5e_priv *priv = netdev_priv(dev);
433 	struct mlx5e_rep_priv *rpriv = priv->ppriv;
434 	struct mlx5_eswitch_rep *rep = rpriv->rep;
435 	int err;
436 
437 	mutex_lock(&priv->state_lock);
438 	err = mlx5e_open_locked(dev);
439 	if (err)
440 		goto unlock;
441 
442 	if (!mlx5_modify_vport_admin_state(priv->mdev,
443 					   MLX5_VPORT_STATE_OP_MOD_ESW_VPORT,
444 					   rep->vport, 1,
445 					   MLX5_VPORT_ADMIN_STATE_UP))
446 		netif_carrier_on(dev);
447 
448 unlock:
449 	mutex_unlock(&priv->state_lock);
450 	return err;
451 }
452 
mlx5e_rep_close(struct net_device * dev)453 static int mlx5e_rep_close(struct net_device *dev)
454 {
455 	struct mlx5e_priv *priv = netdev_priv(dev);
456 	struct mlx5e_rep_priv *rpriv = priv->ppriv;
457 	struct mlx5_eswitch_rep *rep = rpriv->rep;
458 	int ret;
459 
460 	mutex_lock(&priv->state_lock);
461 	mlx5_modify_vport_admin_state(priv->mdev,
462 				      MLX5_VPORT_STATE_OP_MOD_ESW_VPORT,
463 				      rep->vport, 1,
464 				      MLX5_VPORT_ADMIN_STATE_DOWN);
465 	ret = mlx5e_close_locked(dev);
466 	mutex_unlock(&priv->state_lock);
467 	return ret;
468 }
469 
mlx5e_is_uplink_rep(struct mlx5e_priv * priv)470 bool mlx5e_is_uplink_rep(struct mlx5e_priv *priv)
471 {
472 	struct mlx5e_rep_priv *rpriv = priv->ppriv;
473 	struct mlx5_eswitch_rep *rep;
474 
475 	if (!MLX5_ESWITCH_MANAGER(priv->mdev))
476 		return false;
477 
478 	if (!rpriv) /* non vport rep mlx5e instances don't use this field */
479 		return false;
480 
481 	rep = rpriv->rep;
482 	return (rep->vport == MLX5_VPORT_UPLINK);
483 }
484 
mlx5e_rep_has_offload_stats(const struct net_device * dev,int attr_id)485 bool mlx5e_rep_has_offload_stats(const struct net_device *dev, int attr_id)
486 {
487 	switch (attr_id) {
488 	case IFLA_OFFLOAD_XSTATS_CPU_HIT:
489 			return true;
490 	}
491 
492 	return false;
493 }
494 
495 static int
mlx5e_get_sw_stats64(const struct net_device * dev,struct rtnl_link_stats64 * stats)496 mlx5e_get_sw_stats64(const struct net_device *dev,
497 		     struct rtnl_link_stats64 *stats)
498 {
499 	struct mlx5e_priv *priv = netdev_priv(dev);
500 
501 	mlx5e_fold_sw_stats64(priv, stats);
502 	return 0;
503 }
504 
mlx5e_rep_get_offload_stats(int attr_id,const struct net_device * dev,void * sp)505 int mlx5e_rep_get_offload_stats(int attr_id, const struct net_device *dev,
506 				void *sp)
507 {
508 	switch (attr_id) {
509 	case IFLA_OFFLOAD_XSTATS_CPU_HIT:
510 		return mlx5e_get_sw_stats64(dev, sp);
511 	}
512 
513 	return -EINVAL;
514 }
515 
516 static void
mlx5e_rep_get_stats(struct net_device * dev,struct rtnl_link_stats64 * stats)517 mlx5e_rep_get_stats(struct net_device *dev, struct rtnl_link_stats64 *stats)
518 {
519 	struct mlx5e_priv *priv = netdev_priv(dev);
520 
521 	/* update HW stats in background for next time */
522 	mlx5e_queue_update_stats(priv);
523 	memcpy(stats, &priv->stats.vf_vport, sizeof(*stats));
524 }
525 
mlx5e_rep_change_mtu(struct net_device * netdev,int new_mtu)526 static int mlx5e_rep_change_mtu(struct net_device *netdev, int new_mtu)
527 {
528 	return mlx5e_change_mtu(netdev, new_mtu, NULL);
529 }
530 
mlx5e_rep_get_devlink_port(struct net_device * netdev)531 static struct devlink_port *mlx5e_rep_get_devlink_port(struct net_device *netdev)
532 {
533 	struct mlx5e_priv *priv = netdev_priv(netdev);
534 	struct mlx5e_rep_priv *rpriv = priv->ppriv;
535 	struct mlx5_core_dev *dev = priv->mdev;
536 
537 	return mlx5_esw_offloads_devlink_port(dev->priv.eswitch, rpriv->rep->vport);
538 }
539 
mlx5e_rep_change_carrier(struct net_device * dev,bool new_carrier)540 static int mlx5e_rep_change_carrier(struct net_device *dev, bool new_carrier)
541 {
542 	struct mlx5e_priv *priv = netdev_priv(dev);
543 	struct mlx5e_rep_priv *rpriv = priv->ppriv;
544 	struct mlx5_eswitch_rep *rep = rpriv->rep;
545 	int err;
546 
547 	if (new_carrier) {
548 		err = mlx5_modify_vport_admin_state(priv->mdev, MLX5_VPORT_STATE_OP_MOD_ESW_VPORT,
549 						    rep->vport, 1, MLX5_VPORT_ADMIN_STATE_UP);
550 		if (err)
551 			return err;
552 		netif_carrier_on(dev);
553 	} else {
554 		err = mlx5_modify_vport_admin_state(priv->mdev, MLX5_VPORT_STATE_OP_MOD_ESW_VPORT,
555 						    rep->vport, 1, MLX5_VPORT_ADMIN_STATE_DOWN);
556 		if (err)
557 			return err;
558 		netif_carrier_off(dev);
559 	}
560 	return 0;
561 }
562 
563 static const struct net_device_ops mlx5e_netdev_ops_rep = {
564 	.ndo_open                = mlx5e_rep_open,
565 	.ndo_stop                = mlx5e_rep_close,
566 	.ndo_start_xmit          = mlx5e_xmit,
567 	.ndo_setup_tc            = mlx5e_rep_setup_tc,
568 	.ndo_get_devlink_port    = mlx5e_rep_get_devlink_port,
569 	.ndo_get_stats64         = mlx5e_rep_get_stats,
570 	.ndo_has_offload_stats	 = mlx5e_rep_has_offload_stats,
571 	.ndo_get_offload_stats	 = mlx5e_rep_get_offload_stats,
572 	.ndo_change_mtu          = mlx5e_rep_change_mtu,
573 	.ndo_change_carrier      = mlx5e_rep_change_carrier,
574 };
575 
mlx5e_eswitch_uplink_rep(const struct net_device * netdev)576 bool mlx5e_eswitch_uplink_rep(const struct net_device *netdev)
577 {
578 	return netdev->netdev_ops == &mlx5e_netdev_ops &&
579 	       mlx5e_is_uplink_rep(netdev_priv(netdev));
580 }
581 
mlx5e_eswitch_vf_rep(const struct net_device * netdev)582 bool mlx5e_eswitch_vf_rep(const struct net_device *netdev)
583 {
584 	return netdev->netdev_ops == &mlx5e_netdev_ops_rep;
585 }
586 
mlx5e_build_rep_params(struct net_device * netdev)587 static void mlx5e_build_rep_params(struct net_device *netdev)
588 {
589 	struct mlx5e_priv *priv = netdev_priv(netdev);
590 	struct mlx5e_rep_priv *rpriv = priv->ppriv;
591 	struct mlx5_eswitch_rep *rep = rpriv->rep;
592 	struct mlx5_core_dev *mdev = priv->mdev;
593 	struct mlx5e_params *params;
594 
595 	u8 cq_period_mode = MLX5_CAP_GEN(mdev, cq_period_start_from_cqe) ?
596 					 MLX5_CQ_PERIOD_MODE_START_FROM_CQE :
597 					 MLX5_CQ_PERIOD_MODE_START_FROM_EQE;
598 
599 	params = &priv->channels.params;
600 
601 	params->num_channels = MLX5E_REP_PARAMS_DEF_NUM_CHANNELS;
602 	params->hard_mtu    = MLX5E_ETH_HARD_MTU;
603 	params->sw_mtu      = netdev->mtu;
604 
605 	/* SQ */
606 	if (rep->vport == MLX5_VPORT_UPLINK)
607 		params->log_sq_size = MLX5E_PARAMS_DEFAULT_LOG_SQ_SIZE;
608 	else
609 		params->log_sq_size = MLX5E_REP_PARAMS_DEF_LOG_SQ_SIZE;
610 
611 	/* RQ */
612 	mlx5e_build_rq_params(mdev, params);
613 
614 	/* CQ moderation params */
615 	params->rx_dim_enabled = MLX5_CAP_GEN(mdev, cq_moderation);
616 	mlx5e_set_rx_cq_mode_params(params, cq_period_mode);
617 
618 	params->mqprio.num_tc       = 1;
619 	params->tunneled_offload_en = false;
620 
621 	/* Set an initial non-zero value, so that mlx5e_select_queue won't
622 	 * divide by zero if called before first activating channels.
623 	 */
624 	priv->num_tc_x_num_ch = params->num_channels * params->mqprio.num_tc;
625 
626 	mlx5_query_min_inline(mdev, &params->tx_min_inline_mode);
627 }
628 
mlx5e_build_rep_netdev(struct net_device * netdev,struct mlx5_core_dev * mdev)629 static void mlx5e_build_rep_netdev(struct net_device *netdev,
630 				   struct mlx5_core_dev *mdev)
631 {
632 	SET_NETDEV_DEV(netdev, mdev->device);
633 	netdev->netdev_ops = &mlx5e_netdev_ops_rep;
634 	eth_hw_addr_random(netdev);
635 	netdev->ethtool_ops = &mlx5e_rep_ethtool_ops;
636 
637 	netdev->watchdog_timeo    = 15 * HZ;
638 
639 #if IS_ENABLED(CONFIG_MLX5_CLS_ACT)
640 	netdev->hw_features    |= NETIF_F_HW_TC;
641 #endif
642 	netdev->hw_features    |= NETIF_F_SG;
643 	netdev->hw_features    |= NETIF_F_IP_CSUM;
644 	netdev->hw_features    |= NETIF_F_IPV6_CSUM;
645 	netdev->hw_features    |= NETIF_F_GRO;
646 	netdev->hw_features    |= NETIF_F_TSO;
647 	netdev->hw_features    |= NETIF_F_TSO6;
648 	netdev->hw_features    |= NETIF_F_RXCSUM;
649 
650 	netdev->features |= netdev->hw_features;
651 	netdev->features |= NETIF_F_NETNS_LOCAL;
652 }
653 
mlx5e_init_rep(struct mlx5_core_dev * mdev,struct net_device * netdev)654 static int mlx5e_init_rep(struct mlx5_core_dev *mdev,
655 			  struct net_device *netdev)
656 {
657 	struct mlx5e_priv *priv = netdev_priv(netdev);
658 
659 	mlx5e_build_rep_params(netdev);
660 	mlx5e_timestamp_init(priv);
661 
662 	return 0;
663 }
664 
mlx5e_init_ul_rep(struct mlx5_core_dev * mdev,struct net_device * netdev)665 static int mlx5e_init_ul_rep(struct mlx5_core_dev *mdev,
666 			     struct net_device *netdev)
667 {
668 	struct mlx5e_priv *priv = netdev_priv(netdev);
669 	int err;
670 
671 	err = mlx5e_ipsec_init(priv);
672 	if (err)
673 		mlx5_core_err(mdev, "Uplink rep IPsec initialization failed, %d\n", err);
674 
675 	mlx5e_vxlan_set_netdev_info(priv);
676 	return mlx5e_init_rep(mdev, netdev);
677 }
678 
mlx5e_cleanup_rep(struct mlx5e_priv * priv)679 static void mlx5e_cleanup_rep(struct mlx5e_priv *priv)
680 {
681 	mlx5e_ipsec_cleanup(priv);
682 }
683 
mlx5e_create_rep_ttc_table(struct mlx5e_priv * priv)684 static int mlx5e_create_rep_ttc_table(struct mlx5e_priv *priv)
685 {
686 	struct mlx5e_rep_priv *rpriv = priv->ppriv;
687 	struct mlx5_eswitch_rep *rep = rpriv->rep;
688 	struct ttc_params ttc_params = {};
689 	int err;
690 
691 	priv->fs.ns = mlx5_get_flow_namespace(priv->mdev,
692 					      MLX5_FLOW_NAMESPACE_KERNEL);
693 
694 	/* The inner_ttc in the ttc params is intentionally not set */
695 	mlx5e_set_ttc_params(priv, &ttc_params, false);
696 
697 	if (rep->vport != MLX5_VPORT_UPLINK)
698 		/* To give uplik rep TTC a lower level for chaining from root ft */
699 		ttc_params.ft_attr.level = MLX5E_TTC_FT_LEVEL + 1;
700 
701 	priv->fs.ttc = mlx5_create_ttc_table(priv->mdev, &ttc_params);
702 	if (IS_ERR(priv->fs.ttc)) {
703 		err = PTR_ERR(priv->fs.ttc);
704 		netdev_err(priv->netdev, "Failed to create rep ttc table, err=%d\n",
705 			   err);
706 		return err;
707 	}
708 	return 0;
709 }
710 
mlx5e_create_rep_root_ft(struct mlx5e_priv * priv)711 static int mlx5e_create_rep_root_ft(struct mlx5e_priv *priv)
712 {
713 	struct mlx5e_rep_priv *rpriv = priv->ppriv;
714 	struct mlx5_eswitch_rep *rep = rpriv->rep;
715 	struct mlx5_flow_table_attr ft_attr = {};
716 	struct mlx5_flow_namespace *ns;
717 	int err = 0;
718 
719 	if (rep->vport != MLX5_VPORT_UPLINK) {
720 		/* non uplik reps will skip any bypass tables and go directly to
721 		 * their own ttc
722 		 */
723 		rpriv->root_ft = mlx5_get_ttc_flow_table(priv->fs.ttc);
724 		return 0;
725 	}
726 
727 	/* uplink root ft will be used to auto chain, to ethtool or ttc tables */
728 	ns = mlx5_get_flow_namespace(priv->mdev, MLX5_FLOW_NAMESPACE_OFFLOADS);
729 	if (!ns) {
730 		netdev_err(priv->netdev, "Failed to get reps offloads namespace\n");
731 		return -EOPNOTSUPP;
732 	}
733 
734 	ft_attr.max_fte = 0; /* Empty table, miss rule will always point to next table */
735 	ft_attr.prio = 1;
736 	ft_attr.level = 1;
737 
738 	rpriv->root_ft = mlx5_create_flow_table(ns, &ft_attr);
739 	if (IS_ERR(rpriv->root_ft)) {
740 		err = PTR_ERR(rpriv->root_ft);
741 		rpriv->root_ft = NULL;
742 	}
743 
744 	return err;
745 }
746 
mlx5e_destroy_rep_root_ft(struct mlx5e_priv * priv)747 static void mlx5e_destroy_rep_root_ft(struct mlx5e_priv *priv)
748 {
749 	struct mlx5e_rep_priv *rpriv = priv->ppriv;
750 	struct mlx5_eswitch_rep *rep = rpriv->rep;
751 
752 	if (rep->vport != MLX5_VPORT_UPLINK)
753 		return;
754 	mlx5_destroy_flow_table(rpriv->root_ft);
755 }
756 
mlx5e_create_rep_vport_rx_rule(struct mlx5e_priv * priv)757 static int mlx5e_create_rep_vport_rx_rule(struct mlx5e_priv *priv)
758 {
759 	struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
760 	struct mlx5e_rep_priv *rpriv = priv->ppriv;
761 	struct mlx5_eswitch_rep *rep = rpriv->rep;
762 	struct mlx5_flow_handle *flow_rule;
763 	struct mlx5_flow_destination dest;
764 
765 	dest.type = MLX5_FLOW_DESTINATION_TYPE_FLOW_TABLE;
766 	dest.ft = rpriv->root_ft;
767 
768 	flow_rule = mlx5_eswitch_create_vport_rx_rule(esw, rep->vport, &dest);
769 	if (IS_ERR(flow_rule))
770 		return PTR_ERR(flow_rule);
771 	rpriv->vport_rx_rule = flow_rule;
772 	return 0;
773 }
774 
rep_vport_rx_rule_destroy(struct mlx5e_priv * priv)775 static void rep_vport_rx_rule_destroy(struct mlx5e_priv *priv)
776 {
777 	struct mlx5e_rep_priv *rpriv = priv->ppriv;
778 
779 	if (!rpriv->vport_rx_rule)
780 		return;
781 
782 	mlx5_del_flow_rules(rpriv->vport_rx_rule);
783 	rpriv->vport_rx_rule = NULL;
784 }
785 
mlx5e_rep_bond_update(struct mlx5e_priv * priv,bool cleanup)786 int mlx5e_rep_bond_update(struct mlx5e_priv *priv, bool cleanup)
787 {
788 	rep_vport_rx_rule_destroy(priv);
789 
790 	return cleanup ? 0 : mlx5e_create_rep_vport_rx_rule(priv);
791 }
792 
mlx5e_init_rep_rx(struct mlx5e_priv * priv)793 static int mlx5e_init_rep_rx(struct mlx5e_priv *priv)
794 {
795 	struct mlx5_core_dev *mdev = priv->mdev;
796 	struct mlx5e_lro_param lro_param;
797 	int err;
798 
799 	priv->rx_res = mlx5e_rx_res_alloc();
800 	if (!priv->rx_res)
801 		return -ENOMEM;
802 
803 	mlx5e_init_l2_addr(priv);
804 
805 	err = mlx5e_open_drop_rq(priv, &priv->drop_rq);
806 	if (err) {
807 		mlx5_core_err(mdev, "open drop rq failed, %d\n", err);
808 		return err;
809 	}
810 
811 	lro_param = mlx5e_get_lro_param(&priv->channels.params);
812 	err = mlx5e_rx_res_init(priv->rx_res, priv->mdev, 0,
813 				priv->max_nch, priv->drop_rq.rqn, &lro_param,
814 				priv->channels.params.num_channels);
815 	if (err)
816 		goto err_close_drop_rq;
817 
818 	err = mlx5e_create_rep_ttc_table(priv);
819 	if (err)
820 		goto err_destroy_rx_res;
821 
822 	err = mlx5e_create_rep_root_ft(priv);
823 	if (err)
824 		goto err_destroy_ttc_table;
825 
826 	err = mlx5e_create_rep_vport_rx_rule(priv);
827 	if (err)
828 		goto err_destroy_root_ft;
829 
830 	mlx5e_ethtool_init_steering(priv);
831 
832 	return 0;
833 
834 err_destroy_root_ft:
835 	mlx5e_destroy_rep_root_ft(priv);
836 err_destroy_ttc_table:
837 	mlx5_destroy_ttc_table(priv->fs.ttc);
838 err_destroy_rx_res:
839 	mlx5e_rx_res_destroy(priv->rx_res);
840 err_close_drop_rq:
841 	mlx5e_close_drop_rq(&priv->drop_rq);
842 	mlx5e_rx_res_free(priv->rx_res);
843 	priv->rx_res = NULL;
844 	return err;
845 }
846 
mlx5e_cleanup_rep_rx(struct mlx5e_priv * priv)847 static void mlx5e_cleanup_rep_rx(struct mlx5e_priv *priv)
848 {
849 	mlx5e_ethtool_cleanup_steering(priv);
850 	rep_vport_rx_rule_destroy(priv);
851 	mlx5e_destroy_rep_root_ft(priv);
852 	mlx5_destroy_ttc_table(priv->fs.ttc);
853 	mlx5e_rx_res_destroy(priv->rx_res);
854 	mlx5e_close_drop_rq(&priv->drop_rq);
855 	mlx5e_rx_res_free(priv->rx_res);
856 	priv->rx_res = NULL;
857 }
858 
mlx5e_init_ul_rep_rx(struct mlx5e_priv * priv)859 static int mlx5e_init_ul_rep_rx(struct mlx5e_priv *priv)
860 {
861 	mlx5e_create_q_counters(priv);
862 	return mlx5e_init_rep_rx(priv);
863 }
864 
mlx5e_cleanup_ul_rep_rx(struct mlx5e_priv * priv)865 static void mlx5e_cleanup_ul_rep_rx(struct mlx5e_priv *priv)
866 {
867 	mlx5e_cleanup_rep_rx(priv);
868 	mlx5e_destroy_q_counters(priv);
869 }
870 
mlx5e_init_uplink_rep_tx(struct mlx5e_rep_priv * rpriv)871 static int mlx5e_init_uplink_rep_tx(struct mlx5e_rep_priv *rpriv)
872 {
873 	struct mlx5_rep_uplink_priv *uplink_priv;
874 	struct net_device *netdev;
875 	struct mlx5e_priv *priv;
876 	int err;
877 
878 	netdev = rpriv->netdev;
879 	priv = netdev_priv(netdev);
880 	uplink_priv = &rpriv->uplink_priv;
881 
882 	err = mlx5e_rep_tc_init(rpriv);
883 	if (err)
884 		return err;
885 
886 	mlx5_init_port_tun_entropy(&uplink_priv->tun_entropy, priv->mdev);
887 
888 	mlx5e_rep_bond_init(rpriv);
889 	err = mlx5e_rep_tc_netdevice_event_register(rpriv);
890 	if (err) {
891 		mlx5_core_err(priv->mdev, "Failed to register netdev notifier, err: %d\n",
892 			      err);
893 		goto err_event_reg;
894 	}
895 
896 	return 0;
897 
898 err_event_reg:
899 	mlx5e_rep_bond_cleanup(rpriv);
900 	mlx5e_rep_tc_cleanup(rpriv);
901 	return err;
902 }
903 
mlx5e_init_rep_tx(struct mlx5e_priv * priv)904 static int mlx5e_init_rep_tx(struct mlx5e_priv *priv)
905 {
906 	struct mlx5e_rep_priv *rpriv = priv->ppriv;
907 	int err;
908 
909 	err = mlx5e_create_tises(priv);
910 	if (err) {
911 		mlx5_core_warn(priv->mdev, "create tises failed, %d\n", err);
912 		return err;
913 	}
914 
915 	if (rpriv->rep->vport == MLX5_VPORT_UPLINK) {
916 		err = mlx5e_init_uplink_rep_tx(rpriv);
917 		if (err)
918 			goto destroy_tises;
919 	}
920 
921 	return 0;
922 
923 destroy_tises:
924 	mlx5e_destroy_tises(priv);
925 	return err;
926 }
927 
mlx5e_cleanup_uplink_rep_tx(struct mlx5e_rep_priv * rpriv)928 static void mlx5e_cleanup_uplink_rep_tx(struct mlx5e_rep_priv *rpriv)
929 {
930 	mlx5e_rep_tc_netdevice_event_unregister(rpriv);
931 	mlx5e_rep_bond_cleanup(rpriv);
932 	mlx5e_rep_tc_cleanup(rpriv);
933 }
934 
mlx5e_cleanup_rep_tx(struct mlx5e_priv * priv)935 static void mlx5e_cleanup_rep_tx(struct mlx5e_priv *priv)
936 {
937 	struct mlx5e_rep_priv *rpriv = priv->ppriv;
938 
939 	mlx5e_destroy_tises(priv);
940 
941 	if (rpriv->rep->vport == MLX5_VPORT_UPLINK)
942 		mlx5e_cleanup_uplink_rep_tx(rpriv);
943 }
944 
mlx5e_rep_enable(struct mlx5e_priv * priv)945 static void mlx5e_rep_enable(struct mlx5e_priv *priv)
946 {
947 	struct mlx5e_rep_priv *rpriv = priv->ppriv;
948 
949 	mlx5e_set_netdev_mtu_boundaries(priv);
950 	mlx5e_rep_neigh_init(rpriv);
951 }
952 
mlx5e_rep_disable(struct mlx5e_priv * priv)953 static void mlx5e_rep_disable(struct mlx5e_priv *priv)
954 {
955 	struct mlx5e_rep_priv *rpriv = priv->ppriv;
956 
957 	mlx5e_rep_neigh_cleanup(rpriv);
958 }
959 
mlx5e_update_rep_rx(struct mlx5e_priv * priv)960 static int mlx5e_update_rep_rx(struct mlx5e_priv *priv)
961 {
962 	return 0;
963 }
964 
uplink_rep_async_event(struct notifier_block * nb,unsigned long event,void * data)965 static int uplink_rep_async_event(struct notifier_block *nb, unsigned long event, void *data)
966 {
967 	struct mlx5e_priv *priv = container_of(nb, struct mlx5e_priv, events_nb);
968 
969 	if (event == MLX5_EVENT_TYPE_PORT_CHANGE) {
970 		struct mlx5_eqe *eqe = data;
971 
972 		switch (eqe->sub_type) {
973 		case MLX5_PORT_CHANGE_SUBTYPE_DOWN:
974 		case MLX5_PORT_CHANGE_SUBTYPE_ACTIVE:
975 			queue_work(priv->wq, &priv->update_carrier_work);
976 			break;
977 		default:
978 			return NOTIFY_DONE;
979 		}
980 
981 		return NOTIFY_OK;
982 	}
983 
984 	if (event == MLX5_DEV_EVENT_PORT_AFFINITY)
985 		return mlx5e_rep_tc_event_port_affinity(priv);
986 
987 	return NOTIFY_DONE;
988 }
989 
mlx5e_uplink_rep_enable(struct mlx5e_priv * priv)990 static void mlx5e_uplink_rep_enable(struct mlx5e_priv *priv)
991 {
992 	struct mlx5e_rep_priv *rpriv = priv->ppriv;
993 	struct net_device *netdev = priv->netdev;
994 	struct mlx5_core_dev *mdev = priv->mdev;
995 	u16 max_mtu;
996 
997 	netdev->min_mtu = ETH_MIN_MTU;
998 	mlx5_query_port_max_mtu(priv->mdev, &max_mtu, 1);
999 	netdev->max_mtu = MLX5E_HW2SW_MTU(&priv->channels.params, max_mtu);
1000 	mlx5e_set_dev_port_mtu(priv);
1001 
1002 	mlx5e_rep_tc_enable(priv);
1003 
1004 	if (MLX5_CAP_GEN(mdev, uplink_follow))
1005 		mlx5_modify_vport_admin_state(mdev, MLX5_VPORT_STATE_OP_MOD_UPLINK,
1006 					      0, 0, MLX5_VPORT_ADMIN_STATE_AUTO);
1007 	mlx5_lag_add_netdev(mdev, netdev);
1008 	priv->events_nb.notifier_call = uplink_rep_async_event;
1009 	mlx5_notifier_register(mdev, &priv->events_nb);
1010 	mlx5e_dcbnl_initialize(priv);
1011 	mlx5e_dcbnl_init_app(priv);
1012 	mlx5e_rep_neigh_init(rpriv);
1013 	mlx5e_rep_bridge_init(priv);
1014 
1015 	netdev->wanted_features |= NETIF_F_HW_TC;
1016 
1017 	rtnl_lock();
1018 	if (netif_running(netdev))
1019 		mlx5e_open(netdev);
1020 	netif_device_attach(netdev);
1021 	rtnl_unlock();
1022 }
1023 
mlx5e_uplink_rep_disable(struct mlx5e_priv * priv)1024 static void mlx5e_uplink_rep_disable(struct mlx5e_priv *priv)
1025 {
1026 	struct mlx5e_rep_priv *rpriv = priv->ppriv;
1027 	struct mlx5_core_dev *mdev = priv->mdev;
1028 
1029 	rtnl_lock();
1030 	if (netif_running(priv->netdev))
1031 		mlx5e_close(priv->netdev);
1032 	netif_device_detach(priv->netdev);
1033 	rtnl_unlock();
1034 
1035 	mlx5e_rep_bridge_cleanup(priv);
1036 	mlx5e_rep_neigh_cleanup(rpriv);
1037 	mlx5e_dcbnl_delete_app(priv);
1038 	mlx5_notifier_unregister(mdev, &priv->events_nb);
1039 	mlx5e_rep_tc_disable(priv);
1040 	mlx5_lag_remove_netdev(mdev, priv->netdev);
1041 }
1042 
1043 static MLX5E_DEFINE_STATS_GRP(sw_rep, 0);
1044 static MLX5E_DEFINE_STATS_GRP(vport_rep, MLX5E_NDO_UPDATE_STATS);
1045 
1046 /* The stats groups order is opposite to the update_stats() order calls */
1047 static mlx5e_stats_grp_t mlx5e_rep_stats_grps[] = {
1048 	&MLX5E_STATS_GRP(sw_rep),
1049 	&MLX5E_STATS_GRP(vport_rep),
1050 };
1051 
mlx5e_rep_stats_grps_num(struct mlx5e_priv * priv)1052 static unsigned int mlx5e_rep_stats_grps_num(struct mlx5e_priv *priv)
1053 {
1054 	return ARRAY_SIZE(mlx5e_rep_stats_grps);
1055 }
1056 
1057 /* The stats groups order is opposite to the update_stats() order calls */
1058 static mlx5e_stats_grp_t mlx5e_ul_rep_stats_grps[] = {
1059 	&MLX5E_STATS_GRP(sw),
1060 	&MLX5E_STATS_GRP(qcnt),
1061 	&MLX5E_STATS_GRP(vnic_env),
1062 	&MLX5E_STATS_GRP(vport),
1063 	&MLX5E_STATS_GRP(802_3),
1064 	&MLX5E_STATS_GRP(2863),
1065 	&MLX5E_STATS_GRP(2819),
1066 	&MLX5E_STATS_GRP(phy),
1067 	&MLX5E_STATS_GRP(eth_ext),
1068 	&MLX5E_STATS_GRP(pcie),
1069 	&MLX5E_STATS_GRP(per_prio),
1070 	&MLX5E_STATS_GRP(pme),
1071 	&MLX5E_STATS_GRP(channels),
1072 	&MLX5E_STATS_GRP(per_port_buff_congest),
1073 };
1074 
mlx5e_ul_rep_stats_grps_num(struct mlx5e_priv * priv)1075 static unsigned int mlx5e_ul_rep_stats_grps_num(struct mlx5e_priv *priv)
1076 {
1077 	return ARRAY_SIZE(mlx5e_ul_rep_stats_grps);
1078 }
1079 
1080 static const struct mlx5e_profile mlx5e_rep_profile = {
1081 	.init			= mlx5e_init_rep,
1082 	.cleanup		= mlx5e_cleanup_rep,
1083 	.init_rx		= mlx5e_init_rep_rx,
1084 	.cleanup_rx		= mlx5e_cleanup_rep_rx,
1085 	.init_tx		= mlx5e_init_rep_tx,
1086 	.cleanup_tx		= mlx5e_cleanup_rep_tx,
1087 	.enable		        = mlx5e_rep_enable,
1088 	.disable	        = mlx5e_rep_disable,
1089 	.update_rx		= mlx5e_update_rep_rx,
1090 	.update_stats           = mlx5e_stats_update_ndo_stats,
1091 	.rx_handlers            = &mlx5e_rx_handlers_rep,
1092 	.max_tc			= 1,
1093 	.rq_groups		= MLX5E_NUM_RQ_GROUPS(REGULAR),
1094 	.stats_grps		= mlx5e_rep_stats_grps,
1095 	.stats_grps_num		= mlx5e_rep_stats_grps_num,
1096 	.rx_ptp_support		= false,
1097 };
1098 
1099 static const struct mlx5e_profile mlx5e_uplink_rep_profile = {
1100 	.init			= mlx5e_init_ul_rep,
1101 	.cleanup		= mlx5e_cleanup_rep,
1102 	.init_rx		= mlx5e_init_ul_rep_rx,
1103 	.cleanup_rx		= mlx5e_cleanup_ul_rep_rx,
1104 	.init_tx		= mlx5e_init_rep_tx,
1105 	.cleanup_tx		= mlx5e_cleanup_rep_tx,
1106 	.enable		        = mlx5e_uplink_rep_enable,
1107 	.disable	        = mlx5e_uplink_rep_disable,
1108 	.update_rx		= mlx5e_update_rep_rx,
1109 	.update_stats           = mlx5e_stats_update_ndo_stats,
1110 	.update_carrier	        = mlx5e_update_carrier,
1111 	.rx_handlers            = &mlx5e_rx_handlers_rep,
1112 	.max_tc			= MLX5E_MAX_NUM_TC,
1113 	/* XSK is needed so we can replace profile with NIC netdev */
1114 	.rq_groups		= MLX5E_NUM_RQ_GROUPS(XSK),
1115 	.stats_grps		= mlx5e_ul_rep_stats_grps,
1116 	.stats_grps_num		= mlx5e_ul_rep_stats_grps_num,
1117 	.rx_ptp_support		= false,
1118 };
1119 
1120 /* e-Switch vport representors */
1121 static int
mlx5e_vport_uplink_rep_load(struct mlx5_core_dev * dev,struct mlx5_eswitch_rep * rep)1122 mlx5e_vport_uplink_rep_load(struct mlx5_core_dev *dev, struct mlx5_eswitch_rep *rep)
1123 {
1124 	struct mlx5e_priv *priv = netdev_priv(mlx5_uplink_netdev_get(dev));
1125 	struct mlx5e_rep_priv *rpriv = mlx5e_rep_to_rep_priv(rep);
1126 	struct devlink_port *dl_port;
1127 	int err;
1128 
1129 	rpriv->netdev = priv->netdev;
1130 
1131 	err = mlx5e_netdev_change_profile(priv, &mlx5e_uplink_rep_profile,
1132 					  rpriv);
1133 	if (err)
1134 		return err;
1135 
1136 	dl_port = mlx5_esw_offloads_devlink_port(dev->priv.eswitch, rpriv->rep->vport);
1137 	if (dl_port)
1138 		devlink_port_type_eth_set(dl_port, rpriv->netdev);
1139 
1140 	return 0;
1141 }
1142 
1143 static void
mlx5e_vport_uplink_rep_unload(struct mlx5e_rep_priv * rpriv)1144 mlx5e_vport_uplink_rep_unload(struct mlx5e_rep_priv *rpriv)
1145 {
1146 	struct net_device *netdev = rpriv->netdev;
1147 	struct devlink_port *dl_port;
1148 	struct mlx5_core_dev *dev;
1149 	struct mlx5e_priv *priv;
1150 
1151 	priv = netdev_priv(netdev);
1152 	dev = priv->mdev;
1153 
1154 	dl_port = mlx5_esw_offloads_devlink_port(dev->priv.eswitch, rpriv->rep->vport);
1155 	if (dl_port)
1156 		devlink_port_type_clear(dl_port);
1157 	mlx5e_netdev_attach_nic_profile(priv);
1158 }
1159 
1160 static int
mlx5e_vport_vf_rep_load(struct mlx5_core_dev * dev,struct mlx5_eswitch_rep * rep)1161 mlx5e_vport_vf_rep_load(struct mlx5_core_dev *dev, struct mlx5_eswitch_rep *rep)
1162 {
1163 	struct mlx5e_rep_priv *rpriv = mlx5e_rep_to_rep_priv(rep);
1164 	const struct mlx5e_profile *profile;
1165 	struct devlink_port *dl_port;
1166 	struct net_device *netdev;
1167 	struct mlx5e_priv *priv;
1168 	unsigned int txqs, rxqs;
1169 	int nch, err;
1170 
1171 	profile = &mlx5e_rep_profile;
1172 	nch = mlx5e_get_max_num_channels(dev);
1173 	txqs = nch * profile->max_tc;
1174 	rxqs = nch * profile->rq_groups;
1175 	netdev = mlx5e_create_netdev(dev, profile, txqs, rxqs);
1176 	if (!netdev) {
1177 		mlx5_core_warn(dev,
1178 			       "Failed to create representor netdev for vport %d\n",
1179 			       rep->vport);
1180 		return -EINVAL;
1181 	}
1182 
1183 	mlx5e_build_rep_netdev(netdev, dev);
1184 	rpriv->netdev = netdev;
1185 
1186 	priv = netdev_priv(netdev);
1187 	priv->profile = profile;
1188 	priv->ppriv = rpriv;
1189 	err = profile->init(dev, netdev);
1190 	if (err) {
1191 		netdev_warn(netdev, "rep profile init failed, %d\n", err);
1192 		goto err_destroy_netdev;
1193 	}
1194 
1195 	err = mlx5e_attach_netdev(netdev_priv(netdev));
1196 	if (err) {
1197 		netdev_warn(netdev,
1198 			    "Failed to attach representor netdev for vport %d\n",
1199 			    rep->vport);
1200 		goto err_cleanup_profile;
1201 	}
1202 
1203 	err = register_netdev(netdev);
1204 	if (err) {
1205 		netdev_warn(netdev,
1206 			    "Failed to register representor netdev for vport %d\n",
1207 			    rep->vport);
1208 		goto err_detach_netdev;
1209 	}
1210 
1211 	dl_port = mlx5_esw_offloads_devlink_port(dev->priv.eswitch, rpriv->rep->vport);
1212 	if (dl_port)
1213 		devlink_port_type_eth_set(dl_port, netdev);
1214 	return 0;
1215 
1216 err_detach_netdev:
1217 	mlx5e_detach_netdev(netdev_priv(netdev));
1218 
1219 err_cleanup_profile:
1220 	priv->profile->cleanup(priv);
1221 
1222 err_destroy_netdev:
1223 	mlx5e_destroy_netdev(netdev_priv(netdev));
1224 	return err;
1225 }
1226 
1227 static int
mlx5e_vport_rep_load(struct mlx5_core_dev * dev,struct mlx5_eswitch_rep * rep)1228 mlx5e_vport_rep_load(struct mlx5_core_dev *dev, struct mlx5_eswitch_rep *rep)
1229 {
1230 	struct mlx5e_rep_priv *rpriv;
1231 	int err;
1232 
1233 	rpriv = kzalloc(sizeof(*rpriv), GFP_KERNEL);
1234 	if (!rpriv)
1235 		return -ENOMEM;
1236 
1237 	/* rpriv->rep to be looked up when profile->init() is called */
1238 	rpriv->rep = rep;
1239 	rep->rep_data[REP_ETH].priv = rpriv;
1240 	INIT_LIST_HEAD(&rpriv->vport_sqs_list);
1241 
1242 	if (rep->vport == MLX5_VPORT_UPLINK)
1243 		err = mlx5e_vport_uplink_rep_load(dev, rep);
1244 	else
1245 		err = mlx5e_vport_vf_rep_load(dev, rep);
1246 
1247 	if (err)
1248 		kfree(rpriv);
1249 
1250 	return err;
1251 }
1252 
1253 static void
mlx5e_vport_rep_unload(struct mlx5_eswitch_rep * rep)1254 mlx5e_vport_rep_unload(struct mlx5_eswitch_rep *rep)
1255 {
1256 	struct mlx5e_rep_priv *rpriv = mlx5e_rep_to_rep_priv(rep);
1257 	struct net_device *netdev = rpriv->netdev;
1258 	struct mlx5e_priv *priv = netdev_priv(netdev);
1259 	struct mlx5_core_dev *dev = priv->mdev;
1260 	struct devlink_port *dl_port;
1261 	void *ppriv = priv->ppriv;
1262 
1263 	if (rep->vport == MLX5_VPORT_UPLINK) {
1264 		mlx5e_vport_uplink_rep_unload(rpriv);
1265 		goto free_ppriv;
1266 	}
1267 
1268 	dl_port = mlx5_esw_offloads_devlink_port(dev->priv.eswitch, rpriv->rep->vport);
1269 	if (dl_port)
1270 		devlink_port_type_clear(dl_port);
1271 	unregister_netdev(netdev);
1272 	mlx5e_detach_netdev(priv);
1273 	priv->profile->cleanup(priv);
1274 	mlx5e_destroy_netdev(priv);
1275 free_ppriv:
1276 	kfree(ppriv); /* mlx5e_rep_priv */
1277 }
1278 
mlx5e_vport_rep_get_proto_dev(struct mlx5_eswitch_rep * rep)1279 static void *mlx5e_vport_rep_get_proto_dev(struct mlx5_eswitch_rep *rep)
1280 {
1281 	struct mlx5e_rep_priv *rpriv;
1282 
1283 	rpriv = mlx5e_rep_to_rep_priv(rep);
1284 
1285 	return rpriv->netdev;
1286 }
1287 
mlx5e_vport_rep_event_unpair(struct mlx5_eswitch_rep * rep)1288 static void mlx5e_vport_rep_event_unpair(struct mlx5_eswitch_rep *rep)
1289 {
1290 	struct mlx5e_rep_priv *rpriv;
1291 	struct mlx5e_rep_sq *rep_sq;
1292 
1293 	rpriv = mlx5e_rep_to_rep_priv(rep);
1294 	list_for_each_entry(rep_sq, &rpriv->vport_sqs_list, list) {
1295 		if (!rep_sq->send_to_vport_rule_peer)
1296 			continue;
1297 		mlx5_eswitch_del_send_to_vport_rule(rep_sq->send_to_vport_rule_peer);
1298 		rep_sq->send_to_vport_rule_peer = NULL;
1299 	}
1300 }
1301 
mlx5e_vport_rep_event_pair(struct mlx5_eswitch * esw,struct mlx5_eswitch_rep * rep,struct mlx5_eswitch * peer_esw)1302 static int mlx5e_vport_rep_event_pair(struct mlx5_eswitch *esw,
1303 				      struct mlx5_eswitch_rep *rep,
1304 				      struct mlx5_eswitch *peer_esw)
1305 {
1306 	struct mlx5_flow_handle *flow_rule;
1307 	struct mlx5e_rep_priv *rpriv;
1308 	struct mlx5e_rep_sq *rep_sq;
1309 
1310 	rpriv = mlx5e_rep_to_rep_priv(rep);
1311 	list_for_each_entry(rep_sq, &rpriv->vport_sqs_list, list) {
1312 		if (rep_sq->send_to_vport_rule_peer)
1313 			continue;
1314 		flow_rule = mlx5_eswitch_add_send_to_vport_rule(peer_esw, esw, rep, rep_sq->sqn);
1315 		if (IS_ERR(flow_rule))
1316 			goto err_out;
1317 		rep_sq->send_to_vport_rule_peer = flow_rule;
1318 	}
1319 
1320 	return 0;
1321 err_out:
1322 	mlx5e_vport_rep_event_unpair(rep);
1323 	return PTR_ERR(flow_rule);
1324 }
1325 
mlx5e_vport_rep_event(struct mlx5_eswitch * esw,struct mlx5_eswitch_rep * rep,enum mlx5_switchdev_event event,void * data)1326 static int mlx5e_vport_rep_event(struct mlx5_eswitch *esw,
1327 				 struct mlx5_eswitch_rep *rep,
1328 				 enum mlx5_switchdev_event event,
1329 				 void *data)
1330 {
1331 	int err = 0;
1332 
1333 	if (event == MLX5_SWITCHDEV_EVENT_PAIR)
1334 		err = mlx5e_vport_rep_event_pair(esw, rep, data);
1335 	else if (event == MLX5_SWITCHDEV_EVENT_UNPAIR)
1336 		mlx5e_vport_rep_event_unpair(rep);
1337 
1338 	return err;
1339 }
1340 
1341 static const struct mlx5_eswitch_rep_ops rep_ops = {
1342 	.load = mlx5e_vport_rep_load,
1343 	.unload = mlx5e_vport_rep_unload,
1344 	.get_proto_dev = mlx5e_vport_rep_get_proto_dev,
1345 	.event = mlx5e_vport_rep_event,
1346 };
1347 
mlx5e_rep_probe(struct auxiliary_device * adev,const struct auxiliary_device_id * id)1348 static int mlx5e_rep_probe(struct auxiliary_device *adev,
1349 			   const struct auxiliary_device_id *id)
1350 {
1351 	struct mlx5_adev *edev = container_of(adev, struct mlx5_adev, adev);
1352 	struct mlx5_core_dev *mdev = edev->mdev;
1353 	struct mlx5_eswitch *esw;
1354 
1355 	esw = mdev->priv.eswitch;
1356 	mlx5_eswitch_register_vport_reps(esw, &rep_ops, REP_ETH);
1357 	return 0;
1358 }
1359 
mlx5e_rep_remove(struct auxiliary_device * adev)1360 static void mlx5e_rep_remove(struct auxiliary_device *adev)
1361 {
1362 	struct mlx5_adev *vdev = container_of(adev, struct mlx5_adev, adev);
1363 	struct mlx5_core_dev *mdev = vdev->mdev;
1364 	struct mlx5_eswitch *esw;
1365 
1366 	esw = mdev->priv.eswitch;
1367 	mlx5_eswitch_unregister_vport_reps(esw, REP_ETH);
1368 }
1369 
1370 static const struct auxiliary_device_id mlx5e_rep_id_table[] = {
1371 	{ .name = MLX5_ADEV_NAME ".eth-rep", },
1372 	{},
1373 };
1374 
1375 MODULE_DEVICE_TABLE(auxiliary, mlx5e_rep_id_table);
1376 
1377 static struct auxiliary_driver mlx5e_rep_driver = {
1378 	.name = "eth-rep",
1379 	.probe = mlx5e_rep_probe,
1380 	.remove = mlx5e_rep_remove,
1381 	.id_table = mlx5e_rep_id_table,
1382 };
1383 
mlx5e_rep_init(void)1384 int mlx5e_rep_init(void)
1385 {
1386 	return auxiliary_driver_register(&mlx5e_rep_driver);
1387 }
1388 
mlx5e_rep_cleanup(void)1389 void mlx5e_rep_cleanup(void)
1390 {
1391 	auxiliary_driver_unregister(&mlx5e_rep_driver);
1392 }
1393